Kasamsan, Madam Kwan, Khun Aum and the rest of the customer service team at Mattani Suites have been so gracious and helpful to attend to all our needs including delivering half dozen 1.5l mineral water to your door (70baht).
Albeit location is a little far from Thonglor but compensated well with shuttle service (100baht to Ekkamai BTS).
Highly recommend for trips longer than a couple of days.